Current Affairs 2021 PDF

To crack any competitive exam like SSC, Railways, Insurance, UPSC, CLAT, Banking, State PSC Exams and other exams it is very important to answer all current affairs questions correctly. Gkseries Updates Current Affairs and Q&A packages in compiled and sorted topic wise to ensure easy accessibility of the information.

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Data Types and Variables - Multiple Choice Questions with Answers on Core Java

Questions
11 Which one does not have a valueOf(String) method?
A Integer
B Boolean
C Long
D Short

Answer: Option [D]

Java Data Type Short does not have a ValueOf(String) method. The other data types Integer, Boolean, Long, Char, Float, Double have support for the ValueOf(String) method.

12 Which of the following is NOT an example of a data type?
A int
B public
C boolean
D double

Answer: Option [B]

public is not a data type. It is a Java Access modifier. The other Access modifiers are private and protected.

13 Int, long, byte, short are the data types of _____data types?
A unsigned
B signed
C both [A] and [B]
D None of these

Answer: Option [B]
14 Which of the following is correct?
A int a = 16, a>>2 = 4
B int b = -8, b>>1 = -4
C int a = 16, a>>>2 = 4
D All of the above

Answer: Option [D]
15 Which of the following is the mutable wrapper class?
A Integer
B BigInteger
C Boolean
D Character

Answer: Option [B]

Java wrapper classes are immutable. BiInteger are mutable.

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